/Engine/Source/Editor/BlueprintGraph/Classes/AssetBlueprintGraphActions.h
Gets the hover message when when holding a asset over a Blueprint graph from a drag/drop operation
Message to display when hovering.
[FText](API\Runtime\Core\Internationalization\FText) GetGraphHoverMessage ( const [FAssetData](API\Runtime\CoreUObject\AssetRegistry\FAssetData) & AssetData, const [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) * HoverGraph ) const